CN1635672A - Four-wavelength electro-optical Q-regulation pulse laser - Google Patents
Four-wavelength electro-optical Q-regulation pulse laser Download PDFInfo
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Abstract
This invention discloses a four-wavelength electric and light adjusting Q value pulse laser, which contains a laser oscillator generating double-wavelength laser which producing four-wavelength by spectrum, electric light adjusting Q value and double frequency, wherein the electric light adjusting Q value device composed of lithium niobate and deuteration KDP crystal which are selectively used according to the practical use of high permeability or high anti damage threshold and planted with 1-1.4 micrometer thickness of broad band anti-reflection film, the double frequency crystal selectively used from KIP,BBO,KN,LN,LiIO3 or BNN to assembling four different wavelength into a special laser.
Description
Technical field
Four wavelength Q-switched Pulse Laser devices of the present invention belong to optoelectronic areas.
Background technology
The eighties in 20th century, U.S. Anderson and Parrish professor are in a large amount of deep basic research of process, the interactional data between various tissues and the various wavelength laser have been grasped, " selective light heat effect " theory has been proposed, promptly adopt suitable wavelength, suitably energy and suitably pulsewidth the laser damage pathological tissues and do not injure normal surrounding tissue.After nineteen ninety, various high energy pulse laser therapeutic apparantus occurred, made skin disease, laser beautifying and laser surgery obtain breakthrough according to this Design Theory.In order to make full use of the advantage of various wavelength lasers, accomplish a tractor serves several purposes clinically, the dual-wavelength laser therapeutic equipment product of domestic also released one after another 1.064 μ m electro-optical Q-switch Nd:YAG and 0.532 μ m frequency multiplication green glow thereof, but available optical maser wavelength has only two; U.S. Orcon Corp. also is developed into and is used for the sick treatment of various skin and beauty treatment, exportable 0.532 μ m, 0.585 μ m, 0.650 μ m, four different wave lengths of 1.064 μ m through the Medlite II of electric-optically Q-switched generation giant pulse laser laser therapeutic apparantus, but the interval between each wavelength of visible waveband is little; The Laserl-2-3HD multi-wavelength combination laser system of Shi Wozi company then is by four kinds of lasers such as Nd:YAG, Ho:YAG, Er:YAG and chrysoberyl (Zhu Yanbin that is put together, " Chinese laser medical journal " 1997 the 6th volumes second phase P97), there is bigger, the awkward deficiency of volume.
Summary of the invention
The objective of the invention is to disclose a kind of four wavelength Q-switched Pulse Laser devices.
Realize four kinds of wavelength lasers that technical scheme of the present invention is a kind of dual-wavelength laser by the emission of laser oscillator by beam split, electric-optically Q-switched and frequency multiplication generation, four wavelength Q-switched Pulse Laser devices of launching in various various combination modes again, can carry out beam split, electric-optically Q-switched and frequency multiplication to the fundamental wave of laser of 1 μ m of the various laser crystals emissions that produce two kinds of wavelength radiation and 1.3 mu m wavebands and produce the laser giant pulse that pulsewidth is four kinds of wavelength of a few nanoseconds nanosecond to tens, it can be applicable to fields such as laser beautifying, treating skin disease, laser cleaning.
Below in conjunction with accompanying drawing technical scheme of the present invention is further described: the present invention adopts and to place in the laser pump cavity 4, light the photoflash lamp 2 that places in the filter uviol pipe 3 as the single Nd of mixing that cools off through water-cooling system 6 in pump light source and the chamber with Laser Power Devices 7
3+Ionization series laser crystal 1 is as two kinds of wavelength of a laser oscillator emission of laser medium, by 8 beam split of beam splitters such as prism or dichroic mirror, the electric-optically Q-switched device 9 that adopts lithium niobate or deuterate KDP crystal to make transfers Q to produce giant pulse laser, respectively by intracavity frequency doubling crystal 14,15, constitute the vibration light path separately of two kinds of wavelength lasers and the frequency multiplication green glow and the ruddiness of exportable 1 μ m and 1.3 mu m wavebands respectively with output cavity mirror through design rationally, assemble four wavelength Q-switched Pulse Laser devices of two fundamental wavelengths and two harmonic wavelength, through coupled system output, carry out and use and research.
Laser medium 1 adopts Nd:YAP, Nd:YAG, Nd:YLF, Nd:YVO in the accompanying drawing
4Deng laser crystal, under photoflash lamp 2 pumpings, form resonant cavity and pass through the frequency multiplication green laser that frequency-doubling crystal 15 is exported 1 mu m waveband by total reflective mirror 5 and outgoing mirror 13; Form resonant cavity and pass through the frequency multiplication red laser that frequency-doubling crystal 14 is exported 1.3 mu m wavebands by total reflective mirror 5 and outgoing mirror 12.KTP, BBO, LBO, KN, LN, LiIO are adopted in the generation of the second harmonic of two kinds of fundamental wavelength laser
3, frequency-doubling crystal such as BNN.Two kinds of wavelength laser beam split that beam splitter 8 adopts prism and dichroic mirror will vibrate simultaneously in the chamber, electric-optically Q-switched device 9 is placed between beam splitter 8 and the frequency-doubling crystal 14,15.Can obtain the output of the multiple various combination of 1 mu m waveband laser and 1.3 mu m waveband lasers and four kinds of wavelength lasers such as frequency multiplication green laser and red laser thereof by conversion speculum 16 and 17.At last, the various combination in the four wavelength Q-switched Pulse Laser adopts leaded light mechanical arm or focusing system to adopt Optical Fiber Transmission through colimated light system, carries out application study work.
The difference original creation part just of the present invention of the present invention and above-mentioned all kinds of multiple-wavelength lasers is: 1) only can launch the oscillator of two wavelength with a single laser crystal, the laser system compact conformation has cost reduction and advantage easy to use; 2) not domestic not the appearing in the newspapers of electric-optically Q-switched technology of 1.3 mu m waveband lasers among the present invention.3) 1 μ m of the present invention's generation and 1.3 mu m wavebands and frequency multiplication green thereof and four kinds of wavelength of red laser are except that the interval is big, also have through clinical research and application and confirmed the function that the curative effect of each wavelength is given prominence to, especially 1.34 mum wavelengths of Nd:YAP laser emission are to cut up to now and laser (Chen Ming that the property taken into account of stopping blooding is best, Shen Hongyuan etc. " good fortune optical tech ", total the 27th phase 29 (2000); Roland Roux, " Laser Focus World ", 9:24-30 (1997)), because the advantage of its various wavelength in clinical practice given full play in alternative several the uses of laser.Above-mentioned four kinds of different wave length laser group are synthesized a very distinctive laser, provide a kind of convenience, effectively and the means further widened of application for the doctor carries out clinical treatment and research.
Description of drawings
Accompanying drawing is the schematic diagram of four wavelength Q-switched Pulse Laser devices of the present invention.
Embodiment
Below be exemplary embodiments of the present invention:
We are example explanation embodiments of the present invention with the Nd:YAP laser crystal.Place in the accompanying drawing in the laser pump cavity 4 also with cooling system 6 Nd:YAP laser crystals 1 cooling, that can export 1.08 μ m and two wavelength of 1.34 μ m simultaneously, adopt Laser Power Devices 7 to light and place xenon lamp 2 pumpings of filtering in the ultraviolet glass-tube 3, form the double-frequency laser that resonant cavity also passes through frequency-doubling crystal 15 outputs 1.08 mum wavelengths by total reflective mirror 5 and outgoing mirror 13; Form resonant cavity and pass through the double-frequency laser that frequency-doubling crystal 14 is exported 1.34 mum wavelengths by total reflective mirror 5 and outgoing mirror 12; 1.08 the frequency multiplication of mum wavelength laser and 1.34 mum wavelength laser is all used the KTP frequency-doubling crystal.LiNbO is used in the 1.08 μ m that beam splitter 8 will vibrate in the chamber simultaneously and the laser beam split of 1.34 mum wavelengths
3The electric-optically Q-switched device 9 that crystal or deuterate KDP crystal are made places between beam splitter 8 and the frequency-doubling crystal 14,15.By various conversions, can obtain the adjustable output of multiple various combination, energy of 1.08 mum wavelength laser and 1.34 mum wavelength laser and four kinds of wavelength lasers such as frequency multiplication green glow and second-harmonic red laser thereof to speculum 16 and speculum 17.At last, 1.08 μ m, 0.54 μ m, 1.34 μ m, four kinds of wavelength Q-switched Pulse Laser of 0.67 μ m by the light path output of vibrating separately, form with various various combinations adopts leaded light mechanical arm or focusing system to adopt Optical Fiber Transmission through colimated light system different wave length laser based on the actual application requirements, carries out and uses and research work.
Claims (3)
1. wavelength Q-switched Pulse Laser device, be made up of two first-harmonics and two second harmonics thereof, the dual wavelength fundamental wave of laser of emission comprises 1.047 μ m of 1.08 μ m of 1.064 μ m of Nd:YAG laser crystal emission and two wavelength lasers of 1.32 μ m, the emission of Nd:YAP laser crystal and two wavelength lasers of 1.34 μ m, the emission of Nd:YLF laser crystal and two wavelength lasers of 1.313 μ m, Nd:YVO
41.064 μ m and two wavelength lasers of 1.342 μ m of laser crystal emission is characterized in that: described four wavelength Q-switched Pulse Laser systems can carry out four kinds of wavelength that beam split, electric-optically Q-switched and frequency multiplication produce two first-harmonics and two second harmonics thereof and launch the giant pulse laser that pulsewidth is a few nanoseconds nanosecond to tens in the mode of various various combinations 1 μ m and the laser of 1.3 mu m wavebands of all kinds of laser crystals by an oscillator emission.
2. four wavelength Q-switched Pulse Laser devices as claimed in claim 1, it is characterized in that: described electric-optically Q-switched device is made up of lithium niobate or deuterate KDP crystal, practicality according to high permeability or high anti-damage threshold value requires to select for use, and plates the broad-band transparence-increased film of 1 μ m to 1.4 μ m.
3. four wavelength Q-switched Pulse Laser devices as claimed in claim 1 is characterized in that: described frequency-doubling crystal is selected KTP or BBO or BBO or KN or LN or LiIO for use
3Or BNN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310125423 CN1635672A (en) | 2003-12-31 | 2003-12-31 | Four-wavelength electro-optical Q-regulation pulse laser |
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| CN 200310125423 CN1635672A (en) | 2003-12-31 | 2003-12-31 | Four-wavelength electro-optical Q-regulation pulse laser |
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| CN1635672A true CN1635672A (en) | 2005-07-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170085A (en) * | 2011-03-24 | 2011-08-31 | 长春理工大学 | Biasing method electro-optical Q-switched double-wavelength laser |
| CN101677174B (en) * | 2008-09-18 | 2013-03-20 | 中国科学院福建物质结构研究所 | Four-wavelength Q adjusting external cavity type frequency doubling pulse laser |
| CN104143758A (en) * | 2013-05-07 | 2014-11-12 | 许洋 | Control system of all-solid-state pulser based on frequency doubling technology |
| CN103182149B (en) * | 2011-12-30 | 2015-07-22 | 武汉奇致激光技术有限公司 | Combination laser therapy apparatus |
| CN106134020A (en) * | 2014-03-27 | 2016-11-16 | 富士胶片株式会社 | Laser aid and possess the optoacoustic measuring arrangement of this laser aid |
| CN109260604A (en) * | 2018-12-05 | 2019-01-25 | 深圳市吉斯迪科技有限公司 | A kind of portable electro-optical Q-switch laser skin therapeutic equipment |
| CN110620324A (en) * | 2019-10-14 | 2019-12-27 | 华东师范大学重庆研究院 | Rational number resonance multi-wavelength coding method for dynamically adjusting Q |
| CN111048985A (en) * | 2019-05-09 | 2020-04-21 | 长春理工大学 | Dual-wavelength single-longitudinal-mode laser alternate Q-switching output method and laser |
-
2003
- 2003-12-31 CN CN 200310125423 patent/CN1635672A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677174B (en) * | 2008-09-18 | 2013-03-20 | 中国科学院福建物质结构研究所 | Four-wavelength Q adjusting external cavity type frequency doubling pulse laser |
| CN102170085A (en) * | 2011-03-24 | 2011-08-31 | 长春理工大学 | Biasing method electro-optical Q-switched double-wavelength laser |
| CN102170085B (en) * | 2011-03-24 | 2012-12-19 | 长春理工大学 | Biasing method electro-optical Q-switched double-wavelength laser |
| CN103182149B (en) * | 2011-12-30 | 2015-07-22 | 武汉奇致激光技术有限公司 | Combination laser therapy apparatus |
| CN104143758A (en) * | 2013-05-07 | 2014-11-12 | 许洋 | Control system of all-solid-state pulser based on frequency doubling technology |
| CN106134020A (en) * | 2014-03-27 | 2016-11-16 | 富士胶片株式会社 | Laser aid and possess the optoacoustic measuring arrangement of this laser aid |
| CN106134020B (en) * | 2014-03-27 | 2019-04-16 | 富士胶片株式会社 | Laser aid and the optoacoustic measuring arrangement for having the laser aid |
| CN109260604A (en) * | 2018-12-05 | 2019-01-25 | 深圳市吉斯迪科技有限公司 | A kind of portable electro-optical Q-switch laser skin therapeutic equipment |
| CN109260604B (en) * | 2018-12-05 | 2024-03-15 | 深圳市吉斯迪科技有限公司 | Portable electro-optic Q-switched laser skin therapeutic instrument |
| CN111048985A (en) * | 2019-05-09 | 2020-04-21 | 长春理工大学 | Dual-wavelength single-longitudinal-mode laser alternate Q-switching output method and laser |
| CN110620324A (en) * | 2019-10-14 | 2019-12-27 | 华东师范大学重庆研究院 | Rational number resonance multi-wavelength coding method for dynamically adjusting Q |
| CN110620324B (en) * | 2019-10-14 | 2021-08-31 | 华东师范大学重庆研究院 | Rational number resonance multi-wavelength coding method for dynamically adjusting Q |
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